Apparent backlash problem

[MatRacer]

Hi!

I have an apparent backlash problem in my drivetrain. When I release the clutch, give a little bit of throttle and press the clutch again, I can hear a "clock clock - clock " noise. Like if there was enormous amount of backlash.

I have found info on admissible backlash for diff, but what about transmission? I was running a ZF310.

Have anybody ever experience this problem?

I will check the backlash (in degree I guest) of both my tranny and my diff and start from there...

[jlevie]

Get the car up on a lift and have someone duplicate the trigger while you listen under the car for the source of the noise.

[TimKninja]

Ive found this to be normal with BMWs. My Boss's E46 M3 does it, my Co-workers E30 M3 does it. , My car does it.

[E30Gus]

possible sloppy half shafts as well.

[MatRacer]

The thing is that all the drive train is presently out of the car and wanted to try to "solve" the problem before reassembling the drive train.

I compared the backlash I had on an unknown condition Getrag260 vs the Zf310 and it seem to be pretty much the same....

My guest was that is was a sum of all the basklash tranny+ driveshaft + diff + half shaft...

[broach328]

Yeah I have noticed it pretty bad too. ive got zf+328i driveshaft+ 3.25lsd + oem halfs. I always assumed it was the gearing. gonna see how it is when I switch to 2.93.